Lock-case.



No. 647,73I. Patent-ed Apr. I7, |900.

H. G. VDIGHT.

LOCK CASE.

(Application filed Hm'. 10, 1900.)

(No Model.)

TH: cams Ferias co4, PNorouYna. wmmu'ron. ny c.

UNITED STATES fPATErrr OFFICE.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE RUSSELL da ERWIN MANUFACTURING COMPANY, OF SAME PLACE.

LOCK-CASE.

SPECIFICATION forming part of Letters Patent No. 647,731, dated April 17, 1900.

Application led March l0, 1900. Serial No. 8j143. (No model.) Y

To LZZ whom it m/cty concern:

' Be it known that I, HENRY G.VOIGHT, a citi- 'zen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented cert-ain new and useful Improvements in Lock-Cases, of which the following is a specification.

v My invention relates to improvements in lock-cases; and the object of my improvement is to provide a lock-case with convenient gages for laying out the work of putting on the lock.

In the accompanying drawings, Figure 1 is a perspective view of my lock-case. Fig. 2 is a like view of the same in a modified form. Figs. 3 and 4: are respectively an edge and a side view of a portion of a door, illustrating the manner of laying out the work of putting on the lock according to my system by means of the said lock-case.

Adesignates the face-plate, and B the body, of the lock-case, the same being mainly of an ordinary form, in which the face-plate projects beyond the sides and edges of the lockcase B, so that the same may be used as a trysquare. The ends of the face-plate may be of any ordinary form; but I prefer to make the face-plate with semicircular ends, as shown. At one edge of the face-plate I form gages 5 5, preferably in the form of spurs, for marking the centers for boring the holes at each end of the face-plate mortise. Inside of the gages 5 5 I form other gages 6 6 for marking the positions of the upper and lower edges of the I lock-case body B relatively to the said gages 5 5. On the body of the lock-case B, I form a series of gages or centers 7, laid out with reference to the upper and lower edges of the lock-case body at the proper distance apart for boring the mortise-holes for the said casebody. gage 8, preferably in the form of a markingspur, on one edge of the case, as in Fig. l, the said spur-gage being a distance from the inner face of the face-plate equal to the distance of the outer face of the said face-plate to the plane of the knob-spindle and keyhole centers. In Fig. 1 I also provide the back edge of the face-body at one corner with slots or notches 9 in the horizontal planes of the knob-spindle and keyhole centers to serve as gages in marking the height of the said cen- I also provide the said body with a ters relatively to the edges of the lock-case body.

Figs. 3 and 4 illustrate the manner of using this lock-case for laying out the work of putting the lock on a door. The numeral 10 designates a portion of the door, on the edge of which a central vertical line 11 is drawn, as shown in Fig. 3. The spur or gaging edge of the face-plate A is then laid on the said line at the desired point for inserting the lock and the prints of its gages 5 6 indented therein,- the gages 5 5 marking the centers 5a 5a for boring the ends of the face-plate mortise, while the gages 6 6 mark the position in that mortise of the upper and lower edges of the lock-case body. By means of the lock-case or other try-square and a pencil or scratchawl the lines 6a are drawn across from the marks of the gages 6 to one or both sides of the door to mark clearly the position of the upper and lower edges of the lock-case. The case is then placed with the series of gages 7 on the central line 11 and with its upper and lower edges coinciding with the marks 6, and the centers l2`are marked for boring the holes for the mortise of the lockcase body. I prefer to make these centers a little nearer together than the width of the face-plate and use a smaller bit for boring the mortise for the case-body than the proper size of bit used for the face-plate mortise, as indicated by the several broken circles in Fig. 8. Squaring from the lines 6L on the edge of the door corresponding marks 62 are made to indicate the position for the upper and lower edgesof the lock-case on the side or sides of the door, as shown in Fig. 4. The inner face of the face-plate A is next placed against the edge of the door and the line 82 marked by the spur 8 on the side of the door to locate the knob-spindle and keyhole centers relatively to the edge of the door, and then, placing the look-case with the corner having the notches 9 on the said line and with the upper and lower edges coinciding with the marks 62, the lines 92 are marked on the line 82 to mark the respective centers of the knob-spindle and keyhole. The lock-case shown in Fig. 2 has the same gages on its face-plate and substantially the same gages on its body, only they are diierently located. The spur-gage 8, for

IOO

the `distance of the keyhole and knob-spindle centers from the edge of the door is on the broad side of the case instead of on the edge,

andthe seriesof gages 7a for the centers for boring the lock-case-body mortise are on the middle portion of back edge instead of on one side'at the corner, and instead-of the notches- 9 I employ spurs or points 9a, correspondingly located and for the same purpose. y

The laying out ofthe work, as illustrated in Figs. 3 andai, may be accomplished withA the lock-case shown in Fig. 2, and the description of laying out the Work by means of the lock-case, Fig. l, is applicable to the lock-case,

Fig. 2, bearing in mind the difference herein pointed out in the location of the respective gages.

I claim as vmy invention-- i l. A lock-case 'shaving on its face-plate," gages for marking the centers of the holes lfor the respective ends of the face-plate mortise, and also'gages for marking the `position rela# tivelythereto 'of the upper and lower edges of the lock-case body, substantially as described. Y* 1 2. A lock-case having on its face-plate,

Y gages for marking the position of the upper and lower edges of the lock-case body, and

having on vthe'said body a series of gages for marking `the centers for boring the case-body mortise, substantially as described.

3. A lock-case having on its body, a gage for lmarking the distance of the knob-spindleand keyhole centers from the edge of the door,

the said gage being located adistance from the case-body mortise, and gages for marking the height of the keyhole and knob-spindle vcenters and their distance from ythe edge of the door, substantiallyras described.

y, l HENRY le.. `'voici-1r.

Witnessesi M. S. WIARD, P. M. BRoNsoN.

`ofgagesfor markingfthe centers for boring 

